Steel structure cleaning device

The utility model discloses a steel structure cleaning device which comprises a base, the top of the base is fixedly connected with a frame, one side of the frame is fixedly connected with a first motor, an output shaft of the first motor is fixedly connected with a mounting screw through a coupler, and the outer wall of the mounting screw is in threaded connection with a movable plate. The steel structure cleaning device is provided with a second motor, a rotating rod, a first fixing frame, a threaded sleeve, a self-locking screw rod, a limiting plate, a rotating shaft and a second fixing frame, the steel structure is installed on the first fixing frame and the second fixing frame through starting, and the self-locking screw rod is rotated; by starting a first motor, a self-locking screw rod can well rotate in a threaded sleeve, the self-locking screw rod can push a limiting plate to fasten and install a steel structure, in addition, by starting a second motor, a motor can well drive a first fixing frame and